This Week in PLOS

Isolation can lead to detectably shorter telomere lengths in African grey parrots, according to a PLOS One study. An Austrian team used quantitative real-time PCR to measure telomere lengths in red blood cells from dozens of grey parrots ranging in age from less than one-year-old to 45-years-old that had been housed in captivity alone or with another bird.

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The apple has traveled westward and eastward along the Silk Road, according to a new genetic analysis.

In Nature this week: GWAS data used to reposition drugs for psychiatric use, and more.

Genetic disease risk information doesn't always spur people to make healthy lifestyle changes, according to the Associated Press.

A University of California, San Diego-led team has used liquid biopsies to uncover possible treatments for patients with cancers of unknown primary.